3x^2+2x-3=22x-7

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Solution for 3x^2+2x-3=22x-7 equation:


Simplifying
3x2 + 2x + -3 = 22x + -7

Reorder the terms:
-3 + 2x + 3x2 = 22x + -7

Reorder the terms:
-3 + 2x + 3x2 = -7 + 22x

Solving
-3 + 2x + 3x2 = -7 + 22x

Solving for variable 'x'.

Reorder the terms:
-3 + 7 + 2x + -22x + 3x2 = -7 + 22x + 7 + -22x

Combine like terms: -3 + 7 = 4
4 + 2x + -22x + 3x2 = -7 + 22x + 7 + -22x

Combine like terms: 2x + -22x = -20x
4 + -20x + 3x2 = -7 + 22x + 7 + -22x

Reorder the terms:
4 + -20x + 3x2 = -7 + 7 + 22x + -22x

Combine like terms: -7 + 7 = 0
4 + -20x + 3x2 = 0 + 22x + -22x
4 + -20x + 3x2 = 22x + -22x

Combine like terms: 22x + -22x = 0
4 + -20x + 3x2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
1.333333333 + -6.666666667x + x2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + -6.666666667x + -1.333333333 + x2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + -6.666666667x + x2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + -6.666666667x + x2 = 0 + -1.333333333
-6.666666667x + x2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
-6.666666667x + x2 = -1.333333333

The x term is -6.666666667x.  Take half its coefficient (-3.333333334).
Square it (11.11111112) and add it to both sides.

Add '11.11111112' to each side of the equation.
-6.666666667x + 11.11111112 + x2 = -1.333333333 + 11.11111112

Reorder the terms:
11.11111112 + -6.666666667x + x2 = -1.333333333 + 11.11111112

Combine like terms: -1.333333333 + 11.11111112 = 9.777777787
11.11111112 + -6.666666667x + x2 = 9.777777787

Factor a perfect square on the left side:
(x + -3.333333334)(x + -3.333333334) = 9.777777787

Calculate the square root of the right side: 3.126943841

Break this problem into two subproblems by setting 
(x + -3.333333334) equal to 3.126943841 and -3.126943841.

Subproblem 1

x + -3.333333334 = 3.126943841 Simplifying x + -3.333333334 = 3.126943841 Reorder the terms: -3.333333334 + x = 3.126943841 Solving -3.333333334 + x = 3.126943841 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.333333334' to each side of the equation. -3.333333334 + 3.333333334 + x = 3.126943841 + 3.333333334 Combine like terms: -3.333333334 + 3.333333334 = 0.000000000 0.000000000 + x = 3.126943841 + 3.333333334 x = 3.126943841 + 3.333333334 Combine like terms: 3.126943841 + 3.333333334 = 6.460277175 x = 6.460277175 Simplifying x = 6.460277175

Subproblem 2

x + -3.333333334 = -3.126943841 Simplifying x + -3.333333334 = -3.126943841 Reorder the terms: -3.333333334 + x = -3.126943841 Solving -3.333333334 + x = -3.126943841 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.333333334' to each side of the equation. -3.333333334 + 3.333333334 + x = -3.126943841 + 3.333333334 Combine like terms: -3.333333334 + 3.333333334 = 0.000000000 0.000000000 + x = -3.126943841 + 3.333333334 x = -3.126943841 + 3.333333334 Combine like terms: -3.126943841 + 3.333333334 = 0.206389493 x = 0.206389493 Simplifying x = 0.206389493

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.460277175, 0.206389493}

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